The pop star, whose "California Gurls" has become the inescapable song of the season, is being threatened with a lawsuit by representatives of The Beach Boys for appropriating their famous chorus line for her tune, reports the New York Post.

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Rondor Music, representing Boys Brian Wilson and Mike Love, sent a letter to Perry's label, Capitol Records, asking for a writing credit and royalties for her use of the line.

The line in question was actually uttered by guest star Snoop Dogg on Perry's track, a bubbly ode to beach days and warm nights.

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Wilson and Love have previously both admitted to liking Perry's work, especially since she said her tune was a tribute to their legendary band.

"I love her vocal," Wilson said in an interview with the Los Angeles Times. "She sounds very clear and energetic...The melody is infectious."